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2021 Mazda3 2.5 Turbo is official, with automatic transmission only

The Mazda3 Turbo is here, and while it’s no Mazdaspeed, this is still a happy day for enthusiasts. Its full, official name is the 2021 Mazda3 2.5 Turbo, which begins to describe it perfectly. Just as was expected, Mazda has taken its 2.5-liter turbocharged four-cylinder off its shelf and plopped it into the compact 3. When run on 93 octane fuel, Mazda claims 250 horsepower and 320 pound-feet of torque. You can still run it on 87 octane, but the numbers drop to 227 horsepower and 310 pound-feet of torque. Mazda says this engine has a specific calibration for the Mazda3 “to deliver the unique driving dynamics expected by our most passionate drivers.” The engine delivers a stout low-end shove in its other applications, so perhaps Mazda has found a way to make it more excitable in the upper rev ranges. WeÂ’ll see about that when we drive it. The Turbo is also paired exclusively with all-wheel drive and the six-speed automatic transmission. It is sad to see the six-speed manual being left in the dust here, but Mazda has decided to not offer it as an option. The all-wheel drive system operates the same as the one in the naturally aspirated version, which should hopefully be good enough to mitigate torque steer and understeer. Mazda hasnÂ’t quoted any official acceleration times for the Turbo yet, but we expect it could chop about a second off the carÂ’s 0-60 mph time. Something in the low 6-second range seems plausible. There are no changes to the chassis, suspension or brakes for this model; Mazda says "the current Mazda3, as well as all our vehicles, are always designed and tuned to be focused on dynamic driving. We are confident that the turbo engine will help to refine the already exciting driving experience without the need to add more than is necessary." It does come in a base trim (similar to a base hatchback in content), but even that trim is relatively well-equipped. A Premium Plus Package is available that raises the bar. This package includes leather seats, navigation, HomeLink, Traffic Jam Assist (provides steering inputs below 40 mph to stay in lane), 360-degree camera, rear automatic emergency braking, rear cross-traffic braking and parking sensors in front and back.  Unfortunately, the new driver assistance features we listed above are exclusive to the Turbo and wonÂ’t be available on other Mazda3 models this year.

Mazda Skyactiv-X Review | The revolution begins with a squeeze-bang

The matte black Skyactiv-X prototype looks like a rough Mazda3, perhaps reconstructed after a bad wreck by an over-enthusiastic owner of a spot welder and lots of gaffers' tape. Ribbed ducts poke out of the dash sending two breaths of conditioned air to no one in particular. Even its revolutionary engine, the thing we're here to experience, is entombed in a massive, nondescript cover to mask its unseemly noises. It's a wild, strange way to meet a very unconventional vehicle that promises diesel-like fuel economy, a wide torque band, and an exotic method for burning less gas than ever before. It takes a few hours for Mazda's engineers to explain the fundamental principles of operation. For more detail, read our Skyactiv-X Spark Controlled Compression Ignition explainer, but here's a very brief overview. Skyactiv-X marries some traditional gasoline engine characteristics with a novel form of compression ignition called SPCCI. The key for Skyactiv-X is to use very high compression in the cylinder and an extremely lean fuel-air mixture. Squeezed right to the cusp of getting hot enough to blow up all on its own (which is very hard to predict), a squirt of extra gas and a spark interject to cross that compression-ignition threshold in a controlled and predictable manner. See the animation below: That takes a few essential components to get just right. One is a massive amount of computer processing power and some pressure sensors in the individual cylinders, because the ambient conditions change how and when these things happen. Skyactiv-X uses a clutched supercharger to pump in additional air when needed to nail the mixture precisely, and high-pressure injectors to get the low ratios of fuel to disperse properly in the chamber. And since it operates like a conventional gasoline engine sometimes, it uses valve timing to lower the very high compression ratio so it doesn't reach combustion ignition in that mode. In practice, the Skyactiv-X runs in compression ignition mode most of the time. In practical terms, that means it drives like a torquey gasoline Skyactiv engine. The torque curve is broad and flat — diesel-like in that respect. That also means it can get away with using a six-speed transmission and a lower final drive for better response. There's enough grunt and economy together that Mazda can let the engine spin faster — at 60 mph, it's running at roughly 1,000 more RPM than a similar gas engine, with greater efficiency.

A car writer's year in new vehicles [w/video]

Christmas is only a week away. The New Year is just around the corner. As 2014 draws to a close, I'm not the only one taking stock of the year that's we're almost shut of. Depending on who you are or what you do, the end of the year can bring to mind tax bills, school semesters or scheduling dental appointments. For me, for the last eight or nine years, at least a small part of this transitory time is occupied with recalling the cars I've driven over the preceding 12 months. Since I started writing about and reviewing cars in 2006, I've done an uneven job of tracking every vehicle I've been in, each year. Last year I made a resolution to be better about it, and the result is a spreadsheet with model names, dates, notes and some basic facts and figures. Armed with this basic data and a yen for year-end stories, I figured it would be interesting to parse the figures and quantify my year in cars in a way I'd never done before. The results are, well, they're a little bizarre, honestly. And I think they'll affect how I approach this gig in 2015. {C} My tally for the year is 68 cars, as of this writing. Before the calendar flips to 2015 it'll be as high as 73. Let me give you a tiny bit of background about how automotive journalists typically get cars to test. There are basically two pools of vehicles I drive on a regular basis: media fleet vehicles and those available on "first drive" programs. The latter group is pretty self-explanatory. Journalists are gathered in one location (sometimes local, sometimes far-flung) with a new model(s), there's usually a day of driving, then we report back to you with our impressions. Media fleet vehicles are different. These are distributed to publications and individual journalists far and wide, and the test period goes from a few days to a week or more. Whereas first drives almost always result in a piece of review content, fleet loans only sometimes do. Other times they serve to give context about brands, segments, technology and the like, to editors and writers. So, adding up the loans I've had out of the press fleet and things I've driven at events, my tally for the year is 68 cars, as of this writing. Before the calendar flips to 2015, it'll be as high as 73. At one of the buff books like Car and Driver or Motor Trend, reviewers might rotate through five cars a week, or more. I know that number sounds high, but as best I can tell, it's pretty average for the full-time professionals in this business.